Our SMART website may be unavailable for a few minutes on July 1st 2025 between 11:00 and 11:30 AM due to an IT update

We would like to inform you that we are rebranding our SMART website from GRTgaz to NaTran on July 1st, 2025 at 11:00 AM.

We are replacing the word GRTgaz with the word NaTran in many places on our SMART website, which notably impacts Excel exports. Certain cell contents in CSV and XLS files, such as zone selection names, are affected, as are column headings and sheet names.

The URLs/APIs to be used are smart.natrangroupe.com, although the current URLs/APIs smart.grtgaz.com will remain valid temporarily.

Definitions
Balancing - Projected closing line pack  Last refresh :

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Period
2025
  • 2027
  • 2026
  • 2025
  • 2024
  • 2023
  • 2022
  • 2021
  • 2020
  • 2019
  • 2018
  • 2017
  • 2016
  • 2015
  • 2014
  • 2013
  • 2012
  • 2011
  • 2010
  • 2009
  • 2008
  • 2007
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Data associated with the obsolete meshes, which is no longer displayed on the portal, remain available via the Services>Data request function.

NaTran
  • NaTran
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Projected Closing line pack : The Projected Closing line pack stands for the estimated line pack level of the transportation network at the end of a given gasday (withinday or dayahead).